The following is a list of all Site Templates that are available within SharePoint 2013 Beta currently.

GLOBAL#0 Global template

STS#0 Team Site

STS#1Blank Site

STS#2 Document Workspace

MPS#0 Basic Meeting Workspace

MPS#1 Blank Meeting Workspace

MPS#2 Decision Meeting Workspace

MPS#3 Social Meeting Workspace

MPS#4 Multipage Meeting Workspace

CENTRALADMIN#0 Central Admin Site

WIKI#0 Wiki Site

BLOG#0 Blog

SGS#0 Group Work Site

TENANTADMIN#0 Tenant Admin Site

APP#0 App Template

APPCATALOG#0 App Catalog Site

ACCSRV#0 Access Services Site

ACCSVC#0 Access Services Site Internal

ACCSVC#1 Access Services Site

BDR#0 Document Center

DEV#0 Developer Site

DOCMARKETPLACESITE#0 Academic Library

EDISC#0 Discovery Center

EDISC#1 Discovery Case

OFFILE#0 (obsolete) Records Center

OFFILE#1 Records Center

OSRV#0 Shared Services Administration Site

PPSMASite#0 PerformancePoint

BICenterSite#0 Business Intelligence Center

SPS#0 SharePoint Portal Server Site

SPSPERS#0 SharePoint Portal Server Personal Space

SPSPERS#2 Storage And Social SharePoint Portal …

SPSPERS#3 Storage Only SharePoint Portal Server…

SPSPERS#4 Social Only SharePoint Portal Server …

SPSPERS#5 Empty SharePoint Portal Server Person…

SPSMSITE#0 Personalization Site

SPSTOC#0 Contents area Template

SPSTOPIC#0 Topic area template

SPSNEWS#0 News Site

CMSPUBLISHING#0 Publishing Site

BLANKINTERNET#0 Publishing Site

BLANKINTERNET#1 Press Releases Site

BLANKINTERNET#2 Publishing Site with Workflow

SPSNHOME#0 News Site

SPSSITES#0 Site Directory

SPSCOMMU#0 Community area template

SPSREPORTCENTER#0 Report Center

SPSPORTAL#0 Collaboration Portal

SRCHCEN#0 Enterprise Search Center

PROFILES#0 Profiles

BLANKINTERNETCONT… Publishing Portal

SPSMSITEHOST#0 My Site Host

ENTERWIKI#0 Enterprise Wiki

PROJECTSITE#0 Project Site

PRODUCTCATALOG#0 Product Catalog

COMMUNITY#0 Community Site

COMMUNITYPORTAL#0 Community Portal

SRCHCENTERLITE#0 Basic Search Center

SRCHCENTERLITE#1 Basic Search Center

visprus#0 Visio Process Repository